SUNA V2

The SUNA V2 UV nitrate sensor is the ultimate chemical-free solution for autonomous monitoring of nitrogen-based nutrient concentrations in ocean, estuarine and high turbidity freshwater environments.

PERFORMANCE

See User’s Manual for detailed performance specifications.

 μM
(Freshwater or Seawater with Temperature & Salinity Correction
mgN/L
(Seawater)
Limit of Detection0.5 / 0.20.007 / 0.0028
Range of Detection3000 / 400042 / 56
Accuracy (greater of)2 / N/A0.028 / 0.056
Precision (short term)0.3 / 2.40.004 / 0.034
Drift (per hour lamp time)0.3 / 10.004 / 0.014
Turbidity Range*625 NTU (10 mm pathlength; absent other absorbing species) 1250 NTU (5 mm pathlength; absent other absorbing species)
Drift (per hour lamp time)0.3 µM (SW with T/S corr. processing) 1.0 µM (SW processing)

*Nephelometric Turbidity Units

OPTICS

Path Length10 mm & 5 mm (high turbidity option)
Wavelength Range190-370 nm
Lamp TypeContinuous Wave, Deuterium Lamp
Lamp Lifetime900 h

ELECTRICAL

Input Voltage8-18 VDC
Power Consumption7.5 W (0.625 A at 12 V) nominal

MECHANICAL

Material Titanium
Depth Rating
500 m
Weight (Acetal/ Titanium)
5.1 kg
Displacement
1749 cm3

CALIBRATION

Methods
  • Seawater
  • Freshwater
  • Class-based Freshwater
Correction

Real-Time temperature-salinity correction available*  (0-35C, 0-40 PSU)

* Requires external T/S data.

DIMENSIONS

 

Specifications may change without notice.February 2017